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View Full Version : Box Placement Legality?



bball09124
08-17-2008, 04:10 AM
So I was thinking about how much of a disadvantage it is to have a trunk car opposed to say a CRX and this popped into my head. Could you just plop your box (provided it stays under the windowline and fits in your back seat) in your back seat for competitions? I'd imagine it'd be a good bit louder then being in the trunk, but only some testing will show if that is true or not.


I built a little 1.3 cube box tuned to 52 hz with a 6" aero for my 10" RE SX for a competition tomorrow for shits and giggles, itll be funny when I put up some better numbers then some people with a pair of 15"s. I'm gonna meter the box in a bunch of positions tomorrow, including sitting in the back seat, then make my run on the TL and see what I come up with.

BushJ311
08-17-2008, 04:13 AM
Sounds good. I will be waiting for results.

pr-festiva
08-17-2008, 04:17 AM
wouldnt that put you in super street no wall? just from my experience i havent seen throwing a box in the back seat give very good results.Its possible but i havent seen it yet

bball09124
08-17-2008, 04:24 AM
wouldnt that put you in super street no wall? just from my experience i havent seen throwing a box in the back seat give very good results.Its possible but i havent seen it yet

Very possible that it does not yield good results, I'll find out for sure tomorrow. I wouldn't see why that would put you in SS NW, its behind the B pillar and under the windowline right?

pr-festiva
08-17-2008, 04:26 AM
i thought since its not located in the cargo area that it would be SS it's been awhile since i looked at the rules:)

bball09124
08-17-2008, 04:29 AM
i thought since its not located in the cargo area that it would be SS it's been awhile since i looked at the rules:)

Oh, very possible, that didn't come to mind. I'm gonna do some rules reading right now. If I ever want to be a player in the SPL game I'm gonna need to know those rulebooks in and out.

pr-festiva
08-17-2008, 04:37 AM
they got ya on the must not interfear rule,,the seats must be factory operational

bball09124
08-17-2008, 04:39 AM
they got ya on the must not interfear rule,,the seats must be factory operational

yup, just read it too. under the "street max" section-

Subwoofer enclosures may be placed in or on the rear seat(s) of the vehicle. (The rear seat(s) may be removed or folded at the competitor's discretion.)


Now to check IASCA rules.

pr-festiva
08-17-2008, 04:42 AM
We dont have iasca around here any more,,hell we dont even have any shows any more:( a couple a year in western NY

bball09124
08-18-2008, 03:17 AM
Never made it to the show today, I'm gonna meter tomorrow and post up results.



Okay, I was thinking again. Could you put a box on top of rear seats folded down? You can in Explorers and other SUV's, so I wouldn't see why not in a trunk car. (I'd imagine there is a rule about this somewhere too, I read through them and didn't find any though).

pr-festiva
08-18-2008, 05:18 AM
it would still interfear with the operation of the seat

bball09124
08-18-2008, 12:26 PM
it would still interfear with the operation of the seat

Wouldn't it interfere in an SUV as well though?

DDSC
08-18-2008, 12:32 PM
either way, if the rear seats folded down iin a car that dosnt give you much room till you hit the window line

bball09124
08-18-2008, 12:34 PM
either way, if the rear seats folded down iin a car that dosnt give you much room till you hit the window line

It gives me about as much as I have in the trunk believe it or not.

TSGP
08-18-2008, 12:38 PM
in an SUV you can't place the box on the rear seats and be in a street class.

In most street classes (except meca) the street rules are....everything in the cargo area, rear seat must be able to latch without moving the enclosure, and everything attached to the enclosure must be under the window line.

In MECA the enclosure has to be under the rear seat (no rearward vision blocked)

In street max you can have a wall if you wanted it, but you are limited to 1 battery

bball09124
08-20-2008, 01:21 AM
Did a 143.8 my meter (140.8 TL) @ 53 hz in the 1.1 cube box tuned to 53 hz with 6" aero if anyone was curious. Testing score with box in back seat tomorrow.

Best I've done is 148.2 my meter with two of the 10"s.

pr-festiva
08-20-2008, 06:19 AM
keep us posted on the score's

hoxie08
08-20-2008, 06:30 AM
this is pretty interesting.. keep us up to date man!

bball09124
08-21-2008, 12:31 AM
142.8 sitting in the back seat. Lost a full db going from box in the trunk to sitting in the back seat. I think the suspension on the RE SX might be a little too soft for the power I'm giving it, I might try some DD's or something with a little stiffer suspensions.

Rashaddd
08-21-2008, 01:57 AM
I've tried it before and it was quite a bit quieter for me, you'd have to seal off the back and basically wall it to make it effective, otherwise you get cancellation

pr-festiva
08-21-2008, 06:17 AM
Im surprised you didnt lose more then that.